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投资总额
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投资总额
aggregate investment gross investments volume of total investment gross investment total amount of investment
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blackboard eraser
black body
black body coefficient
blackbody flame temperature
blackbody origin
black-body photocell
blackbody photocell
blackbody radiating temperature
blackbody radiation
blackbody radiometer
blackbody receiver
blackbody standard
black-body temperature
black body type cell
black bog
black bolt
black border
black bottom plow
black box
black box calf
black-box model
black-box theory
black bread
black brick tea
black bridge washer valve
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